Automatic solution preparation device
By designing a solution automated liquid dispensing device, using technical means such as linear modules and check valves, the problem of low solution preparation efficiency in the existing technology is solved, and efficient and accurate solution preparation and automated operation are achieved.
Patent Information
- Application Number
- CN202421293234.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the prior art, the solution preparation efficiency is low, and laboratory staff need to manually configure the solution, resulting in high labor intensity, low efficiency and low accuracy.
Design a solution automated liquid dispensing device, including solvent suction and discharge device, solute solution suction and discharge device, mixer, liquid dispensing container and control system, and accurately absorb and discharge liquid through a linear module drives the piston rod of the plunger cylinder, using a one-way The valve and commutator achieve primary and secondary dilution and parallel sampling of the solution.
It significantly improves the solution preparation efficiency and accuracy, reduces the labor intensity of liquid dispensing, and realizes automated operation.
Smart Images
Figure CN222489827U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to an automatic solution dispensing device, belonging to the technical field of automatic solution dispensing equipment. Background Art
[0002] In many application occasions such as environmental protection testing and analysis laboratories, food safety testing and analysis laboratories, chemical and medical testing and analysis centers, it is necessary to prepare standard solutions and separate multiple samples in parallel, or dilute the samples multiple times. Most of these mechanical and tedious tasks are currently completed by laboratory staff using manual configuration, which has the problems of high labor intensity, low work efficiency and low precision. Therefore, it is necessary to develop an automatic solution dispensing device for the configuration of single or batch test solutions with high frequency of use. Summary of the invention
[0003] In view of the problems existing in the prior art, the utility model provides an automatic solution dispensing device in order to improve the solution preparation efficiency.
[0004] The technical solution adopted by the utility model is:
[0005] A solution automatic dispensing device comprises a group of solvent suction and discharge devices, at least one group of solute solution suction and discharge devices, a first mixer, and a primary dispensing container; the solvent suction and discharge devices and the solute solution suction and discharge devices both comprise a linear module and a plunger barrel, the slider on the linear module is connected to the piston rod at one end of the plunger barrel through a connector, the other end of the plunger barrel is connected to two parallel pipelines, one of which is connected to an original container containing an original solvent or an original solute solution, and a first one-way valve is provided on the pipeline, the first one-way valve allows liquid to flow from the original container into the plunger barrel in one direction; the other pipeline is connected to a first main pipeline through a second one-way valve, the second one-way valve allows liquid to flow from the plunger barrel into the first main pipeline in one direction, the end of the first main pipeline is connected to the inlet of a first mixer, and the outlet of the first mixer is connected to the primary dispensing container through a pipeline.
[0006] Furthermore, the automated liquid dispensing device also includes a group of primary liquid dispensing suction and discharge devices, a second mixer, a turntable and a plurality of secondary liquid dispensing containers arranged on the turntable. The primary liquid dispensing suction and discharge device also includes a linear module and a plunger cylinder. The slider on the linear module is connected to the piston rod on the plunger cylinder. One end of the plunger cylinder is connected to two pipelines in parallel, one of which is connected to the primary liquid dispensing container, and a third one-way valve is provided on the pipeline. The third one-way valve allows liquid to flow from the primary liquid dispensing container into the plunger cylinder in one direction; the other pipeline is connected to the second main pipeline through a fourth one-way valve. The fourth one-way valve allows liquid to flow from the plunger cylinder into the second main pipeline in one direction. The end of the second main pipeline is connected to the inlet of the second mixer, and the outlet of the second mixer is connected to the secondary liquid dispensing container through a pipeline.
[0007] Furthermore, a commutator is provided at the end of the first main pipeline. The commutator has two outlets, one outlet is connected to the first mixer, and the other outlet is connected to the second mixer.
[0008] Furthermore, the automated liquid dispensing device also includes a purging device, which includes a linear module and a cylinder, the slider of the linear module is connected to the piston of the cylinder, and both ends of the cylinder are respectively connected to a set of purging pipelines, each set of purging pipelines includes an air inlet pipe and an air outlet pipe, and gas one-way valves are provided on the air inlet pipe and the air outlet pipe, and the ends of the two air outlet pipes are respectively connected to the first mixer and the second mixer.
[0009] Furthermore, the liquid preparation device also includes a control system, and the solvent suction and discharge device, the solute solution suction and discharge device, the primary liquid preparation suction and discharge device, the purge device, and the turntable are all electrically connected to the control system.
[0010] Beneficial effects: The utility model utilizes the linear module of the suction and discharge device to drive the piston rod of the plunger barrel to reciprocate to accurately absorb or discharge the solvent or solute solution. With the cooperation of two one-way valves, the first-level configuration of the solution can be realized, and the parallel sampling of the first-level liquid is realized through the cooperation of the first-level liquid distribution suction and discharge device and the turntable; at the same time, the reversing device can also be used to realize the re-dilution and parallel sampling of the first-level liquid distribution. The liquid distribution device can be automatically operated, which significantly improves the liquid distribution efficiency and liquid distribution accuracy and reduces the labor intensity of liquid distribution. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional structural schematic diagram of the automatic solution dispensing device described in the utility model.
[0012] Figure 2 It is a three-dimensional structural perspective view of the liquid dispensing device from another perspective.
[0013] Figure 3 It is a schematic diagram of the layout of the drive device on the lower pallet.
[0014] Figure 4 It is a schematic diagram of the work flow of the utility model.
[0015] Markings in the figure: 1 shell, 2 upper support plate, 3 lower support plate, 4 second mixer, 5 first mixer, 6 turntable, 7 primary liquid distribution tray, 8 raw liquid tray, 9 commutator, 10 primary liquid distribution container, 11 handle, 12 touch control screen, 13 pipeline hole, 31 purge device, 311 linear module, 312 cylinder, 32 primary liquid distribution suction and discharge device, 321 linear module, 322 plunger barrel, 33 solvent suction and discharge device, 331 linear module, 332 plunger barrel, 34 solute A solution suction and discharge device, 35 solute B solution suction and discharge device, 36 solute C solution suction and discharge device, 37 solute D solution suction and discharge device, 38 first main pipeline, 39 second main pipeline, 40 gas one-way valve, 41 liquid one-way valve. DETAILED DESCRIPTION
[0016] The present invention is described in detail below in detail with reference to the accompanying drawings.
[0017] like Figure 1-3 As shown, an automatic liquid dispensing device for solution comprises a rectangular or cube-shaped shell 1, which can be placed on a table or a countertop. Handles 11 are respectively provided on the left and right sides of the shell 1 to facilitate the movement of the liquid dispensing device. A first mixer 5 and a second mixer 4 are provided on the right side plate of the shell, a primary liquid dispensing tray 7 is provided below the first mixer 5, a primary liquid dispensing container 10 can be placed on the primary liquid dispensing tray 7, a turntable 6 is provided below the second mixer 4, the turntable 6 can rotate, and a plurality of containers can be placed on the turntable 6. A stock liquid tray 8 is provided on the left side plate of the shell, a solvent and solute A solution, solute B solution, solute C solution, solute D solution, etc. can be placed on the stock liquid tray 8, and a plurality of pipeline holes 13 can be provided on the left side plate of the shell for pipelines to pass through. The stock liquid tray 8, the turntable 6 and the primary liquid dispensing tray 7 are all fixedly connected to the shell and can move with the shell.
[0018] Two trays are arranged inside the shell, and multiple actuators are arranged on the lower tray 3, including a purge device 31, a first-level liquid dispensing suction and discharge device 32, a solvent suction and discharge device 33, a solute A solution suction and discharge device 34, a solute B solution suction and discharge device 35, a solute C solution suction and discharge device 36, a solute D solution suction and discharge device 37, etc., wherein the purge device 31 includes a linear module 311 and a cylinder 312 and a matching gas one-way valve for suction and exhaust; other solvent or solution suction and discharge devices have roughly the same structure and include linear modules 321, 331 and plunger cylinders 322, 332 and matching liquid one-way valves for suction and discharge of liquid. Electrical control systems such as linear module drivers, PLCs, and motor drivers can be arranged on the upper tray 2, and these electrical control components are not shown in the figure. A touch control screen 12 is installed on the front panel of the shell 1, which can select and control the solution preparation. The electrical control system is electrically connected to each drive device, turntable, touch screen, etc.
[0019] The schematic diagram of the working process of the utility model is as follows Figure 4 As shown, the arrows indicate the flow direction of the liquid or gas. The working principle is as follows: the slider on the linear module in the solvent suction and discharge device 33 and the solute (A\B\C\D) solution suction and discharge device 34, 35, 36, and 37 is connected to the piston rod at one end of the plunger barrel through a connecting piece, and the motor of the linear module drives the screw to rotate, and the screw drives the slider to move linearly along the guide rail, and the slider drives the piston rod of the plunger barrel to move, and the slider drives the piston rod of the plunger barrel to move, and the liquid is extracted or discharged by the slider driving the piston rod to move. The other end of the plunger barrel is connected to two pipelines in parallel, and both pipelines are provided with a liquid one-way valve 41, one of which is connected to the original container containing the original solvent or the original solute solution, and the first one-way valve is provided on the pipeline, and the first one-way valve allows the liquid to flow from the original container into the plunger barrel in one direction; the other pipeline is connected to the first main pipeline 38 through the second one-way valve, and the second one-way valve allows the liquid to flow from the plunger barrel into the first main pipeline in one direction, and the end of the first main pipeline 38 is connected to the inlet of the first mixer 5, and the outlet of the first mixer 5 is connected to the primary liquid distribution container 10 through a pipeline. The stroke of the piston rod can be precisely controlled by the number of revolutions of the motor in the linear module, so that a certain volume of solvent or solution can be accurately and quantitatively sucked, and the solution or solvent is added to the primary liquid preparation container 10 with the cooperation of two one-way valves to achieve the primary dilution preparation of the solute solution. In the specific configuration, the solute solution can be extracted first, and then the solvent can be extracted.
[0020] When the primary dilution preparation is completed, parallel sampling can be performed through the primary liquid dispensing suction and discharge device 32. The primary liquid dispensing suction and discharge device 32 also includes a linear module and a plunger barrel. The slider on the linear module is connected to the piston rod on the plunger barrel. The slider drives the piston rod to move to achieve the extraction or discharge of liquid. One end of the plunger barrel is connected to two pipelines in parallel, one of which is connected to the primary liquid dispensing container 10, and a third one-way valve is provided on the pipeline. The third one-way valve allows liquid to flow from the primary liquid dispensing container into the plunger barrel in one direction; the other pipeline is connected to the second main pipeline 39 through a fourth one-way valve. The fourth one-way valve allows liquid to flow from the plunger barrel into the second main pipeline in one direction. The end of the second main pipeline 39 is connected to the inlet of the second mixer 4, and the outlet of the second mixer 4 is connected to the secondary liquid dispensing container on the turntable 6 through a pipeline. Multiple secondary liquid dispensing containers can be placed on the turntable 6 to achieve multiple parallel sampling.
[0021] A commutator 9 is also provided at the end of the first main pipeline 38. The commutator 9 has two outlets, one outlet is connected to the first mixer 5, and the other outlet is connected to the second mixer 4. The commutator is controlled by the control system so that liquid can only be discharged from one outlet at a time. When the primary liquid needs to be diluted again, a certain amount of the primary liquid can be sucked into the second mixer 4 by the primary liquid suction and discharge device 32, and then a certain amount of solvent can be sucked into the second mixer 4 through the commutator 9 by the solvent suction and discharge device 33. The mixed solution is discharged from the second mixer 4 and enters the secondary liquid preparation container, thereby realizing secondary dilution liquid preparation. In solution configuration, in order to improve the configuration accuracy, when the final liquid concentration is relatively large, for example, greater than or equal to 1 / 500, the primary liquid preparation can be used for one-time preparation; when the final liquid concentration is relatively small, for example, less than 1 / 500, the secondary liquid preparation step can be used to complete the configuration.
[0022] The purging device 31 includes a linear module 311 and a cylinder 312. The slider of the linear module 311 is connected to the piston of the cylinder 312. Both ends of the cylinder are connected to a set of purging pipelines. Each set of purging pipelines includes an air inlet pipe and an air outlet pipe. A gas one-way valve 40 is provided on the air inlet pipe and the air outlet pipe. The ends of the two air outlet pipes are respectively connected to the first mixer 5 and the second mixer 4 to achieve purging of the liquid in the mixer, prevent cross contamination and improve configuration accuracy.
[0023] After describing the implementation mode of the utility model in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of the technical solution of the utility model, and the utility model is not limited to the implementation mode of the examples given in the specification.
Claims
1. A solution automatic dispensing device, characterized in that: It comprises a group of solvent suction and discharge devices, at least one group of solute solution suction and discharge devices, a first mixer, and a primary liquid distribution container; the solvent suction and discharge devices and the solute solution suction and discharge devices both comprise a linear module and a plunger barrel, the slider on the linear module is connected to the piston rod at one end of the plunger barrel, the other end of the plunger barrel is connected to two parallel pipelines, one of which is connected to an original container containing an original solvent or an original solute solution, and a first one-way valve is arranged on the pipeline, the first one-way valve allows liquid to flow from the original container into the plunger barrel in one direction; the other pipeline is connected to a first main pipeline through a second one-way valve, the second one-way valve allows liquid to flow from the plunger barrel into the first main pipeline in one direction, the end of the first main pipeline is connected to the inlet of a first mixer, and the outlet of the first mixer is connected to the primary liquid distribution container through a pipeline.
2. The automatic solution dispensing device according to claim 1, characterized in that: The automated liquid dispensing device also includes a group of primary liquid dispensing suction and discharge devices, a second mixer, a turntable and a plurality of secondary liquid dispensing containers arranged on the turntable. The primary liquid dispensing suction and discharge device also includes a linear module and a plunger barrel. The slider on the linear module is connected to the piston rod on the plunger barrel. One end of the plunger barrel is connected to two pipelines in parallel, one of which is connected to the primary liquid dispensing container, and a third one-way valve is provided on the pipeline. The third one-way valve allows liquid to flow from the primary liquid dispensing container into the plunger barrel in one direction; the other pipeline is connected to the second main pipeline through a fourth one-way valve. The fourth one-way valve allows liquid to flow from the plunger barrel into the second main pipeline in one direction. The end of the second main pipeline is connected to the inlet of the second mixer, and the outlet of the second mixer is connected to the secondary liquid dispensing container through a pipeline.
3. The automatic solution dispensing device according to claim 2, characterized in that: A diverter is also provided at the end of the first main pipeline. The diverter has two outlets, one outlet is connected to the first mixer, and the other outlet is connected to the second mixer.
4. The automatic solution dispensing device according to claim 2, characterized in that: The automatic liquid dispensing device also includes a purge device, which includes a linear module and a cylinder. The slider of the linear module is connected to the piston of the cylinder. Both ends of the cylinder are connected to a set of purge pipelines. Each set of purge pipelines includes an air inlet pipe and an air outlet pipe. Gas one-way valves are provided on the air inlet pipe and the air outlet pipe. The ends of the two air outlet pipes are respectively connected to the first mixer and the second mixer.
5. The automatic solution dispensing device according to claim 4, characterized in that: The liquid preparation device also includes a control system, and the solvent suction and discharge device, the solute solution suction and discharge device, the primary liquid preparation suction and discharge device, the purge device, and the turntable are all electrically connected to the control system.